Munnwyler
A 33-acre lake near Ortonville in Big Stone County.
Fish Species (2)
No gamefish, panfish, or trout are on record for this lake. The species recorded here are listed below.
Other species in this lake (2)
Rough fish, bullheads, and baitfish recorded in DNR surveys — present in the lake, but not typical angling targets.
Trap-net survey · surveyed Jul 1998
Last surveyed 1998 — treat with caution
Catch rate: 13.0 per trap net
Survey History
| Date | Catch Rate | Avg Length | Avg Weight |
|---|---|---|---|
| Jul 16, 1998 | 13.00 | 9.8" | - |
| Jul 16, 1998 | 15.70 | 9.8" | 0.45 lbs |
Trap-net survey · surveyed Jul 1998
Last surveyed 1998 — treat with caution
Catch rate: 2244.0 per trap net
Survey History
| Date | Catch Rate | Avg Length | Avg Weight |
|---|---|---|---|
| Jul 16, 1998 | 2244.00 | - | - |
Fishing Regulations
Statewide limits
Standard statewide Minnesota limits for the species in this lake.
More statewide rules (spearing, rough fish)
Bowfin, buffalo, carp, carpsuckers, freshwater drum, goldeneye, redhorse, and suckers
no limit
Biologist Notes
July 16, 1998Munnwyler Lake is a 28 acre lake located near Ortonville, MN. Like many lakes in the region, its depth increased substantially during the 1990s. Munnw…
Munnwyler Lake is a 28 acre lake located near Ortonville, MN. Like many lakes in the region, its depth increased substantially during the 1990s. Munnwyler Lake was only 4 feet deep in 1972, whereas in 1998 its depth was 22.5 feet. No gamefish were caught during the 1998 population assessment. However, forage fish, including white sucker, fathead minnow, and brook stickleback were abundant. The lack of suitable public access prohibits development of a recreational fishery. No fisheries management activities are planned for Munnwyler Lake.
Frequently Asked Questions
What fish can you catch in Munnwyler?
Minnesota DNR surveys of Munnwyler record 2 species, but no common gamefish or panfish among them. See the species list above for what has been sampled.
Is there public access at Munnwyler?
We don't have a confirmed public access point on record for Munnwyler. Check the DNR LakeFinder page for current access details before you go.
How deep is Munnwyler?
Munnwyler has a maximum depth of 22.5 feet, per Minnesota DNR data.
When was Munnwyler last surveyed?
The most recent Minnesota DNR fish survey data for Munnwyler is from 1998. Surveys this old should be treated with some caution — fish populations change over time.
Does Munnwyler have any invasive species?
No invasive species are on record for Munnwyler in Minnesota DNR data. Always clean, drain, and dry your equipment to help keep it that way.
Are there special fishing regulations on Munnwyler?
No — Munnwyler has no lake-specific regulations in the 2026 Minnesota DNR regulations, so statewide Minnesota limits apply. Verify current rules with the Minnesota DNR before keeping fish.
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Lake Details
- Surface Area
- 32.5 acres
- Max Depth
- 22.5 ft
- Shoreline
- 1.09 mi
- Public Access
- Not confirmed